CN109113754B - Slurry balance shield machine and cutter disc mud cake preventing device thereof - Google Patents
Slurry balance shield machine and cutter disc mud cake preventing device thereof Download PDFInfo
- Publication number
- CN109113754B CN109113754B CN201811197513.0A CN201811197513A CN109113754B CN 109113754 B CN109113754 B CN 109113754B CN 201811197513 A CN201811197513 A CN 201811197513A CN 109113754 B CN109113754 B CN 109113754B
- Authority
- CN
- China
- Prior art keywords
- flushing head
- scraper
- cutterhead
- mud cake
- mud
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002002 slurry Substances 0.000 title claims abstract description 11
- 238000011010 flushing procedure Methods 0.000 claims abstract description 61
- 238000007790 scraping Methods 0.000 claims abstract description 21
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/0875—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket
- E21D9/0879—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket the shield being provided with devices for lining the tunnel, e.g. shuttering
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a slurry balance shield machine and a cutter disc mud cake preventing device thereof, comprising: the device comprises a scraper, a flushing head and a telescopic device, wherein the scraper is arranged in front of the cutterhead and is parallel to the cutterhead, the flushing head penetrates through the cutterhead, a pipe body of the flushing head is fixed on the cutterhead, the telescopic device is used for controlling the scraper to move along the axial direction of the cutterhead, an outlet of the flushing head can be blocked when the scraper moves to a preset position, and an outlet of the flushing head can be unsealed when the scraper moves to the preset position. When the mud scraping plate moves forward, the mud balls around the cutter near the mud scraping plate can be cleaned, and when the mud scraping plate moves forward to a preset position, the flushing head can continuously flush mud residues which are not cleaned; when the mud scraping plate retracts to a preset position, the end face of the outlet of the flushing head can be contacted with the mud scraping plate to achieve the shielding purpose, so that the purpose of protecting the flushing head is achieved, the fault probability of the flushing head can be reduced, mud cakes can be effectively prevented from being formed on the cutter disc, and the purpose of improving the construction efficiency is achieved.
Description
Technical Field
The invention relates to the technical field of shield machines, in particular to a slurry balance shield machine and a cutter disc mud cake preventing device thereof.
Background
Along with the rapid development of shield construction technology, shield machines are widely applied to various fields such as rail transit, diversion engineering, inclined shafts of coal mines and the like.
Meanwhile, more and more requirements are also put on the construction performance of the shield tunneling machine under complex geological conditions, for example, when the shield tunneling machine excavates in a stratum with high water pressure viscosity, the cutter changing mode or the opening rate of the cutter disc are limited, so that in order to prevent the cutter disc from consolidating mud cakes, the cutter disc and mud balls fixedly adhered on the cutter disc need to be scoured and cleaned.
The traditional flushing device is of a single-point fixed structure, can only flush cutters which are separated by a certain distance from the cutter head face, has a limited flushing angle, and simultaneously, is easy to block after long-time tunneling construction because the flushing head is exposed to the excavation face for a long time, so that the flushing efficiency is affected.
Therefore, how to effectively prevent mud cake treatment on the cutterhead of the slurry balance shield machine so as to ensure shield construction efficiency is a technical problem which needs to be solved by the technicians in the field at present.
Disclosure of Invention
In view of the above, the invention aims to provide a slurry balance shield machine and a cutter disc mud cake preventing device thereof, which can effectively prevent the condition that a flushing head is blocked and can effectively improve flushing effect and flushing efficiency.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a mud cake preventing device for a cutterhead, comprising: the device comprises a scraper, a flushing head and a telescopic device, wherein the scraper is arranged in front of a cutter disc and is parallel to the cutter disc, the flushing head penetrates through the cutter disc, a pipe body of the flushing head is fixed on the cutter disc, the telescopic device is used for controlling the scraper to move along the axial direction of the cutter disc, the scraper can shield an outlet of the flushing head when moving backwards to a preset position, and the outlet of the flushing head can be unsealed when moving forwards to the preset position.
Preferably, a wear-resistant grid is arranged on one side of the mud scraping plate, which faces the excavation surface.
Preferably, a slot hole is formed in the scraper, the flushing head is of a bent structure, and when the scraper moves backwards to a preset position, the side wall of the slot hole is in contact with the end face of the outlet of the flushing head.
Preferably, the telescopic device comprises a telescopic rod and a telescopic oil cylinder for controlling the telescopic rod to stretch out and draw back, the telescopic rod penetrates through the cutterhead, and the front end of the telescopic rod is fixed at the back of the mud scraping plate.
Preferably, the telescopic rod further comprises a guide frame for guiding the telescopic rod to move.
Preferably, the back of the cutterhead is provided with a bracket, the cylinder barrel end of the telescopic cylinder is fixed on a vertical plate of the bracket, the back of the guide frame is fixedly connected with the front end of the telescopic rod, and the bottom of the guide frame is provided with a roller for horizontally rolling on a flat plate of the bracket.
Preferably, a rib plate is arranged between the bottom of the flat plate and the cutter head.
Preferably, the telescopic rod is in sliding connection with the cutterhead through a sliding bearing, and sealing devices are arranged at the front end and the rear end of the sliding bearing.
Preferably, a limiting block for limiting the retraction distance of the mud scraping plate is arranged on the back surface of the mud scraping plate.
A slurry balance shield machine comprises any one of the cutterhead mud cake preventing devices.
Compared with the prior art, the technical scheme has the following advantages:
the invention provides a slurry balance shield machine and a cutter disc mud cake preventing device thereof, which comprises: the device comprises a scraper, a flushing head and a telescopic device, wherein the scraper is arranged in front of the cutterhead and is parallel to the cutterhead, the flushing head penetrates through the cutterhead, a pipe body of the flushing head is fixed on the cutterhead, the telescopic device is used for controlling the scraper to move along the axial direction of the cutterhead, an outlet of the flushing head can be blocked when the scraper moves backwards to a preset position, and an outlet of the flushing head can be unsealed when the scraper moves forwards to the preset position. When the mud scraping plate moves forward, the mud balls around the cutter near the mud scraping plate can be cleaned, and when the mud scraping plate moves forward to a preset position, the flushing head can continuously flush mud residues which are not cleaned; when the mud scraping plate is retracted to a preset position, the end face of the outlet of the flushing head can be contacted with the end face of the outlet of the flushing head to achieve the shielding purpose, so that the purpose of protecting the flushing head is achieved, namely, the blocking of the flushing head is prevented, the fault probability of the flushing head can be reduced, mud cakes can be effectively prevented from being formed on a cutter disc, the purpose of improving the construction efficiency is achieved, and the construction risk is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a mud cake preventing device of a cutterhead according to an embodiment of the present invention in a retracted state;
fig. 2 is a schematic structural view of a mud cake preventing device of a cutterhead according to an embodiment of the present invention in an extended state;
fig. 3 is a schematic side view of a guide frame of a device for preventing mud cake formation of a cutterhead according to an embodiment of the present invention;
fig. 4 is a schematic front view of a guide frame of a device for preventing mud cake formation on a cutterhead according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a connection between a telescopic rod and a cutterhead of a cutterhead mud cake preventing device according to an embodiment of the present invention.
The reference numerals are as follows:
1 is a cutterhead, 2 is a mud scraper, 21 is a slotted hole, 3 is a flushing head, 4 is a telescopic device, 41 is a telescopic rod, 42 is a telescopic cylinder, 5 is a guide frame, 51 is a roller, 6 is a bracket, 61 is a vertical plate, 62 is a flat plate, 63 is a rib plate, 7 is a limiting block, 8 is a sliding bearing, and 9 is a sealing device.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a mud cake preventing device of a cutterhead according to an embodiment of the present invention in a retracted state; fig. 2 is a schematic structural view of a mud cake preventing device of a cutterhead according to an embodiment of the present invention in an extended state; fig. 3 is a schematic side view of a guide frame of a device for preventing mud cake formation of a cutterhead according to an embodiment of the present invention; fig. 4 is a schematic front view of a guide frame of a device for preventing mud cake formation on a cutterhead according to an embodiment of the present invention; fig. 5 is a schematic structural diagram of a connection between a telescopic rod and a cutterhead of a cutterhead mud cake preventing device according to an embodiment of the present invention.
The device for preventing mud cake formation of the cutterhead provided by the embodiment of the invention comprises the following components: the device comprises a scraper 2, flushing heads 3 and a telescopic device 4, wherein the scraper 2 is arranged in front of a cutter head 1 and is parallel to the cutter head 1, the flushing heads 3 penetrate the cutter head 1, a pipe body of each flushing head 3 is fixed on the cutter head 1, a plurality of flushing heads 3 can be arranged, outlets of the flushing heads 3 are preferably oriented in different directions, the telescopic device 4 is used for controlling the scraper 2 to move along the axial direction of the cutter head 1, the scraper 2 can shield the outlet of the flushing head 3 when moving backwards to a preset position, and the outlet of the flushing head 3 can be unsealed when moving forwards to the preset position. When the mud scraping plate 2 moves forwards under the control of the telescopic device 4, the mud balls around the cutter near the mud scraping plate 2 can be cleaned, and when the mud scraping plate 2 moves forwards to a preset position, the flushing head 3 can continuously flush mud residues which are not cleaned; when the mud scraping plate 2 is retracted to a preset position, the end faces of the outlet of the flushing head 3 can be contacted with each other to achieve the shielding purpose, so that the purpose of protecting the flushing head 3 is achieved, namely, the situation that the flushing head 3 is blocked is prevented, the fault probability of the flushing head 3 can be reduced, mud cakes can be effectively prevented from being formed by the cutter disc 1, the purpose of improving the construction efficiency is achieved, and the construction risk is reduced.
In order to improve the service life of the scraper, a wear-resistant grid is arranged on one side surface of the scraper, which is opposite to the excavation surface. Wherein the wear-resistant mesh can be fixed on the mud scraping plate in a welding mode.
Specifically, the mud scraper 2 is provided with a slot 21, and the flushing head 3 is of a bent structure, and when the mud scraper 2 moves backwards to a preset position, the side wall of the slot 21 is in contact with the end face of the outlet of the flushing head 3. Wherein the slot 21 may be a through hole or a groove, wherein preferably the side wall of the slot 21 is a planar structure to ensure the tightness of the contact of the flushing head 3 with the side wall of the slot 21. The flushing head 3 may be a single-head or multi-head structure, for example, a 7-shaped or Y-shaped structure, and the bending angle of the flushing head 3 and the number of heads of the flushing head 3 may be selected according to specific situations, which is not limited in this embodiment.
Specifically, the telescopic device 4 includes a telescopic rod 41 and a telescopic cylinder 42 for controlling the telescopic rod 41 to extend and retract, the telescopic rod 41 penetrates the cutterhead 1, and the front end thereof is fixed to the back of the scraper 2. The telescopic rod 41 can axially move relative to the cutterhead 1 under the control of the telescopic oil cylinder 42, so as to drive the mud scraping plate 2 to be far away from or close to the cutterhead 1. Of course, other power means, such as a cylinder or a motor, may be used to effect axial movement of the telescopic rod 41 in addition to the telescopic cylinder 42 described above.
Further, a guide frame 5 for guiding the movement of the telescopic rod 41 is also included. The stability of the telescopic rod 41 during movement can be ensured by the guide frame 5. Wherein a through hole may be provided in the guide frame 5, through which the telescopic rod 41 penetrates.
Specifically, the back of the cutterhead 1 is provided with a bracket 6, the bracket 6 comprises a flat plate 62 and a vertical plate 61, the cylinder barrel end of the telescopic cylinder 42 is fixed on the vertical plate 61 of the bracket 6, the back of the guide frame 5 is fixedly connected with the front end of the telescopic rod 41, and the bottom of the guide frame 5 is provided with a roller 51 for horizontally rolling on the flat plate 62 of the bracket 6. In addition, the guide rail can be arranged to realize the movement of the guide frame 5, and the guide frame can be selected according to actual conditions.
Further, a rib plate 63 is arranged between the bottom of the flat plate 62 and the cutter head 1. The rib plates 63 can improve the bearing stability of the bracket 6.
Further, the telescopic rod 41 is slidably connected to the cutterhead 1 via a sliding bearing 8. Namely, the cutter head 1 is provided with a through hole, a sliding bearing 8 is arranged in the through hole, and the telescopic rod 41 can penetrate through the sliding bearing 8 so as to achieve the purpose of reducing friction, thereby prolonging the service life of corresponding parts.
In order to prevent impurities from entering between the cutterhead 1 and the telescopic rod 41 to influence the normal movement of the telescopic rod 41, the front and rear ends of the sliding bearing 8 are provided with sealing devices 9.
Further, a stopper 7 for restricting the retraction distance thereof is provided on the back surface of the scraper 2. When the scraper 2 is retracted, the limiting block 7 can be contacted with the front surface of the cutter head 1 to achieve the limiting purpose, and the distance between the scraper 2 and the cutter head 1 can be accurately controlled by setting the thickness of the limiting block 7, so that the scraper 2 is ensured to accurately shield the outlet of the flushing head 3.
The invention also provides a slurry balance shield machine, which comprises the cutter disc mud cake preventing device provided by any one of the embodiments, wherein a plurality of mud cake preventing devices can be arranged on the cutter disc 1, and the distribution mode of the mud cake preventing devices can be set according to the specific structure of the cutter disc 1. The beneficial effects of the present invention are described with reference to the above embodiments, and are not described herein.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The slurry balance shield machine and the cutter disc mud cake preventing device provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (10)
1. The utility model provides a mud cake device is prevented to blade disc which characterized in that includes: the device comprises a scraper, a flushing head and a telescopic device, wherein the scraper is arranged in front of a cutter disc and is parallel to the cutter disc, the flushing head penetrates through the cutter disc, a pipe body of the flushing head is fixed on the cutter disc, the telescopic device is used for controlling the scraper to move along the axial direction of the cutter disc, the scraper can shield an outlet of the flushing head when moving backwards to a preset position, and the outlet of the flushing head can be unsealed when moving forwards to the preset position.
2. The cutterhead mud cake preventing device according to claim 1, wherein a wear-resistant grid is arranged on one side of the scraping plate, which is opposite to the excavation surface.
3. The device for preventing mud cake formation on a cutterhead according to claim 1, wherein the scraper is provided with a slot, the flushing head is of a bent structure, and when the scraper moves backward to a preset position, the side wall of the slot is in contact with the end face of the outlet of the flushing head.
4. The disc mud cake preventing device according to claim 1, wherein the telescopic device comprises a telescopic rod and a telescopic cylinder for controlling the telescopic rod to extend and retract, the telescopic rod penetrates through the disc, and the front end of the telescopic rod is fixed on the back of the mud scraping plate.
5. The cutterhead anti-mud cake device of claim 4 further comprising a guide for guiding movement of the telescoping rod.
6. The device for preventing mud cake formation on a cutterhead according to claim 5, wherein a bracket is arranged on the back of the cutterhead, a cylinder barrel end of the telescopic cylinder is fixed on a vertical plate of the bracket, the back of the guide frame is fixedly connected with the front end of the telescopic rod, and a roller for horizontally rolling on a flat plate of the bracket is arranged at the bottom of the guide frame.
7. The disc mud cake preventing device of claim 5, wherein a rib plate is arranged between the bottom of the flat plate and the disc.
8. The disc mud cake preventing device of claim 4, wherein the telescopic rod is slidably connected to the disc through a sliding bearing, and sealing devices are arranged at front and rear ends of the sliding bearing.
9. The disc mud cake preventing device according to claim 1, wherein a stopper for limiting the retraction distance is provided on the back surface of the scraper.
10. A slurry balance shield machine comprising a cutterhead mud cake prevention device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811197513.0A CN109113754B (en) | 2018-10-15 | 2018-10-15 | Slurry balance shield machine and cutter disc mud cake preventing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811197513.0A CN109113754B (en) | 2018-10-15 | 2018-10-15 | Slurry balance shield machine and cutter disc mud cake preventing device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109113754A CN109113754A (en) | 2019-01-01 |
| CN109113754B true CN109113754B (en) | 2023-11-24 |
Family
ID=64854467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811197513.0A Active CN109113754B (en) | 2018-10-15 | 2018-10-15 | Slurry balance shield machine and cutter disc mud cake preventing device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109113754B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915162B (en) * | 2019-03-09 | 2024-06-04 | 上海创力集团股份有限公司 | Hard rock cutting device |
| CN110259472B (en) * | 2019-07-30 | 2024-03-19 | 中铁工程装备集团有限公司 | Center 8-shaped duplex normal-pressure tool changing device |
| CN112647964B (en) * | 2020-12-28 | 2023-05-12 | 中铁十一局集团有限公司 | Super-large diameter shield normal pressure cutterhead mud cake removing device |
| CN117718271B (en) * | 2024-02-18 | 2024-04-26 | 中铁五局集团电务工程有限责任公司 | Shield construction mud cake stripping system and method thereof |
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| CN109113754A (en) | 2019-01-01 |
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Address after: 410100 No. 88 East 7 Line, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Applicant after: China Railway Construction Heavy Industry Co.,Ltd. Address before: 410100 No. 88 East 7 Line, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province Applicant before: China Railway Construction Heavy Industry Co.,Ltd. |
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